IBM x3400 Installation Guide - Page 102

Power, problems

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Power problems v Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. v See the parts listing in the Problem Determination and Service Guide to determine which components are customer replaceable units (CRU) and which components are field replaceable units (FRU). v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a trained service technician. Symptom Action The power-control button does 1. Make sure that the control-panel assembly power-control button is working not work (the server does not correctly: start). Note: The power-control button a. Disconnect the server power cords. will not function until 20 b. Reconnect the power cords. seconds after the server has c. Press the power-control button. If the server do not start, check the been connected to ac power. power-control button for damage. 2. Make sure that: v The power cords are correctly connected to the server and to a working electrical outlet. v The power LEDs (AC, DC) are lit correctly. v The server contains the correct type of DIMMs. v The DIMMs are correctly seated. v A POST beep code did not sound, indicating a memory initialization error. v The LEDs on the power supply do not indicate a problem. v The microprocessor is correctly installed. 3. Reseat the following components: a. DIMMs b. Power supply cables to all internal components c. Power supplies (hot-swap models) 4. Replace the following components one at a time, in the order shown, restarting the server each time: a. DIMMs b. Power supplies (hot-swap models) c. (Trained service technician only) Power supply (non-hot swap models) 5. If you just installed an optional device, remove it, and restart the server. If the server now starts, you might have installed more devices than the power supply supports. 6. See "Solving undetermined problems" in the Problem Determination and Service Guide on the IBM System x3400 Documentation CD. The server does not turn off. 1. Determine whether you are using an Advanced Configuration and Power Management (ACPI) or a non-ACPI operating system. If you are using a non-ACPI operating system, complete the following steps: a. Press Ctrl+Alt+Delete. b. Turn off the server by holding the power-control button for 5 seconds. c. Restart the server. d. If the server fails POST and the power-control button does not work, disconnect the ac power cord for 20 seconds; then, reconnect the ac power cord and restart the server. 2. (Trained service technician only) If the problem remains or if you are using an ACPI-aware operating system, suspect the system board. 88 System x3400 Types 7973, 7974, 7975, and 7976: Installation Guide

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Power
problems
v
Follow
the
suggested
actions
in
the
order
in
which
they
are
listed
in
the
Action
column
until
the
problem
is
solved.
v
See
the
parts
listing
in
the
Problem
Determination
and
Service
Guide
to
determine
which
components
are
customer
replaceable
units
(CRU)
and
which
components
are
field
replaceable
units
(FRU).
v
If
an
action
step
is
preceded
by
“(Trained
service
technician
only),”
that
step
must
be
performed
only
by
a
trained
service
technician.
Symptom
Action
The
power-control
button
does
not
work
(the
server
does
not
start).
Note:
The
power-control
button
will
not
function
until
20
seconds
after
the
server
has
been
connected
to
ac
power.
1.
Make
sure
that
the
control-panel
assembly
power-control
button
is
working
correctly:
a.
Disconnect
the
server
power
cords.
b.
Reconnect
the
power
cords.
c.
Press
the
power-control
button.
If
the
server
do
not
start,
check
the
power-control
button
for
damage.
2.
Make
sure
that:
v
The
power
cords
are
correctly
connected
to
the
server
and
to
a
working
electrical
outlet.
v
The
power
LEDs
(AC,
DC)
are
lit
correctly.
v
The
server
contains
the
correct
type
of
DIMMs.
v
The
DIMMs
are
correctly
seated.
v
A
POST
beep
code
did
not
sound,
indicating
a
memory
initialization
error.
v
The
LEDs
on
the
power
supply
do
not
indicate
a
problem.
v
The
microprocessor
is
correctly
installed.
3.
Reseat
the
following
components:
a.
DIMMs
b.
Power
supply
cables
to
all
internal
components
c.
Power
supplies
(hot-swap
models)
4.
Replace
the
following
components
one
at
a
time,
in
the
order
shown,
restarting
the
server
each
time:
a.
DIMMs
b.
Power
supplies
(hot-swap
models)
c.
(Trained
service
technician
only)
Power
supply
(non-hot
swap
models)
5.
If
you
just
installed
an
optional
device,
remove
it,
and
restart
the
server.
If
the
server
now
starts,
you
might
have
installed
more
devices
than
the
power
supply
supports.
6.
See
“Solving
undetermined
problems”
in
the
Problem
Determination
and
Service
Guide
on
the
IBM
System
x3400
Documentation
CD.
The
server
does
not
turn
off.
1.
Determine
whether
you
are
using
an
Advanced
Configuration
and
Power
Management
(ACPI)
or
a
non-ACPI
operating
system.
If
you
are
using
a
non-ACPI
operating
system,
complete
the
following
steps:
a.
Press
Ctrl+Alt+Delete.
b.
Turn
off
the
server
by
holding
the
power-control
button
for
5
seconds.
c.
Restart
the
server.
d.
If
the
server
fails
POST
and
the
power-control
button
does
not
work,
disconnect
the
ac
power
cord
for
20
seconds;
then,
reconnect
the
ac
power
cord
and
restart
the
server.
2.
(Trained
service
technician
only)
If
the
problem
remains
or
if
you
are
using
an
ACPI-aware
operating
system,
suspect
the
system
board.
88
System
x3400
Types
7973,
7974,
7975,
and
7976:
Installation
Guide